Differences between DNA Polymerase I, II, and III

[Fractal314]

What are DNA polymerase? Why do they have to exist? Why do RNA primers need to be primed? Is the idea of priming, just connecting the 3' to the 5'? What is the difference between the polymerase I, II, III?

Homework Equations

I have no clue how to answer this and my textbook makes me completely lost. If anybody can help that would be great.

 

[chemisttree]

You need to get to googling...